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A009379 Expansion of ln(1+tan(x).x). +0
2
0, 2, -4, 96, -2080, 125440, -8629248, 996007936, -140162633728, 27058965184512, -6350990843576320, 1866805063173799936, -653569786506324738048, 273136898848234632380416, -133034893921204302732328960 (list; graph; listen)
OFFSET

0,2

MATHEMATICA

Log[ 1+Tan[ x ]*x ] (* Even Part *)

CROSSREFS

Sequence in context: A018410 A156496 A007534 this_sequence A092918 A018428 A128773

Adjacent sequences: A009376 A009377 A009378 this_sequence A009380 A009381 A009382

KEYWORD

sign

AUTHOR

R. H. Hardin (rhhardin(AT)att.net)

EXTENSIONS

Extended with signs Mar 15 1997 by Olivier Gerard.

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Last modified December 20 00:58 EST 2009. Contains 171054 sequences.


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